MMA Imaging and Calibration Group

Agenda for meeting Mon, 12 July 1999 at 4pm EDT.

Date: 12 July 1999

Time: 4:00 pm EDT (2:00 pm Socorro, 1:00 pm Tucson)

Phone: (804)296-7082 (CV SoundStation Premier Conference phone).

Past minutes, etc on MMA Imaging and Calibration Division Page

Minutes

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Configurations - Helfer, Radford

See my notes emailed separately. The strawman configuration which Tamara and Simon have devised since the Tucson meeting will be discussed as a prelude to its presentation to the MAC on Wednesday and discussion at the URSI meeting next month.

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WVR - Radford

See my notes emailed separately and since updated. I would like to send a copy of these notes to the MAC for possible discussion, so please read them and comment. I have incoporated Min's comments in this version.

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Audit - Wootten

I will discuss the plan and its audit.

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WWW Site -- Weatherall

Kate has put up an interesting public outreach page based upon the brochure. Comments?

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MAC Meeting

This coming Weds at the usual time. We will discuss the audit I am sure. Also we will discuss data rates and the image library.

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Data Rate - Glendenning

The data rate figure I've been carrying in the project book is 1MB/s average, 10MB/s max sustained. This comes from the Scott et. al. memo (#164) which in turn apparently came from a Tucson science meeting (40 antennas). Mark Holdaway should know about this number. Rupen in a later memo comes up with a science case for 100's of MB/s (OTF synthesis surveys). Note that the NRAO correlator design is capable of dumping data from the LTA at a rate of 1GB/s.

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ALMA Science Meeting

I will update everyone on the status of this event.

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Total Power Mapping --'Holdaway Holdover' Memo - Butler

  • The audit committee had a lot to discuss on Holdaway's Protomemo (postscript) on total power mapping. Bryan will discuss progress unless the stork intervenes. We should plan on a final version of this being ready by the URSI meeting next month.

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    Action Items 12July99

    DECISION: Configurations--where are we? DECISION: 183 GHz or 22 GHz phase correction?

    DECISION: Is a nutating secondary necessary?

    DECISION: What is the effect of 1/f noise in the HEMT amplifiers of SIS receivers upon our ability to combine total power and interferometric images into a faithful representation of the sky?

    MEETINGS: MAC meeting 14 July 1999 at noon. ------

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    Travel

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    T. Helfer: 13-17 July AOC Imaging meeting.

    A. Wootten: 14-25 July Vacation, 13-19 Aug URSI.

    J. Mangum:

    M. Yun:

    B. Butler: Baby leave.

    S. Radford: